The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 24, 1987
Filed:
Apr. 21, 1983
Applicant:
Inventors:
Assignee:
Bayer Aktiengesellschaft, Leverkusen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09B / ; C09B / ; C09D / ; C09D / ;
U.S. Cl.
CPC ...
534655 ; 534575 ; 534581 ; 534887 ; 106119 ; 1062 / ; 106300 ; 106309 ;
Abstract
Anthraquinone-azo pyridone-containing compounds which in one of their tautomeric structures, correspond to the formula ##STR1## in which A denotes an .alpha.-anthraquinone radical which is free from sulphonic acid groups and is unsubstituted or substituted and preferably consists of at most 5 fused rings;